In the latest twist, it's the radio stations themselves that have been reaching out to the labels, offering to play songs in the form of ads, often in the early morning hours when there tends to be an excess inventory of airtime. The practice is legal as long as the station makes an on-air disclosure of the label's sponsorship — typically with an introduction such as "And now, Avril Lavigne's Don't Tell Me, presented by Arista Records."

To be sure, Don't Tell Me is a bona fide hit, even without spins being bought and paid for. Radio stations must play a song many thousands of times for it to crack the Billboard top 10. Nonetheless, a few hundred spins here and there can move a song up a place or two in the rankings — and ensure that it is climbing rather than falling on the charts.

During a single week in May, Canadian pop rocker Avril Lavigne's new song Don't Tell Me aired no fewer than 109 times on Nashville radio station WQZQ-FM.

The heaviest rotation came between midnight and 6 a.m., an on-air no man's land visited largely by insomniacs, truckers and graveyard shift workers. On one Sunday morning, the three-minute, 24-second song aired 18 times, sometimes as little as 11 minutes apart.

Those plays, or "spins," helped Don't Tell Me vault into the elite top 10 on Billboard magazine's national pop radio chart, which radio program directors across the country use to spot hot new tunes.

But what many chart watchers may not know is that the predawn saturation in Nashville — and elsewhere — occurred largely because Arista Records paid the station to play the song as an advertisement. In all, sources said, WQZQ aired Don't Tell Me as an ad at least 40 times the week ending May 23, accounting for more than one-third of the song's airplay on the station.

The Don't Tell Me campaign is part of the latest craze in record promotion, a high-pressure part of the music business in which the labels try to influence which songs reach the air.

In the late 1950s, rock's earliest days, the industry was hit by a series of payola scandals in which cash bribes were paid to disc jockeys who agreed to play certain songs. That practice was subsequently outlawed, prompting record companies to find more subtle means of currying favor with radio programmers, such as free junkets and concert tickets.

In the latest twist, it's the radio stations themselves that have been reaching out to the labels, offering to play songs in the form of ads, often in the early morning hours when there tends to be an excess inventory of airtime. The practice is legal as long as the station makes an on-air disclosure of the label's sponsorship — typically with an introduction such as "And now, Avril Lavigne's Don't Tell Me, presented by Arista Records."

To be sure, Don't Tell Me is a bona fide hit, even without spins being bought and paid for. Radio stations must play a song many thousands of times for it to crack the Billboard top 10. Nonetheless, a few hundred spins here and there can move a song up a place or two in the rankings — and ensure that it is climbing rather than falling on the charts.

Playing songs as advertising makes "the chart unreliable," said Garett Michaels, program director of San Diego rock station KBZT-FM. "Basically, the radio station isn't playing a song because they believe in it. They're playing it because they're being paid."

All five major record corporations have at least dabbled in the sales programs, industry sources said, with some reportedly paying as much as $60,000 in advertising fees to promote a single song.

Interscope Records has purchased spins for the Black Eyed Peas' song Hey Mama in recent weeks, as well as for Sheryl Crow's The First Cut Is the Deepest and Sugababes' Hole in the Head, sources said. Virgin Records has bought advertising time for rock band A Perfect Circle. Lava Records has purchased airplay for singer Cherie, and V2 Records has done the same for Katy Rose.

Representatives for the record labels declined to comment.

But one label executive who has purchased airplay, speaking on condition of anonymity, said the idea was clearly to prop up songs long enough for them to attract genuine fans.

"In our business, perception is reality," he said. "The minute you're down in spins, these program directors drop the record."

I think the public opinion of the recording industry is even lower than Dubya's is...at least for people under twenty, who either can't or don't care to vote anyway.